99010001 has 4 divisors (see below), whose sum is σ = 102203904. Its totient is φ = 95816100.

The previous prime is 99009991. The next prime is 99010019. The reversal of 99010001 is 10001099.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10001099 = 197 ⋅50767.

It is a cyclic number.

It is not a de Polignac number, because 99010001 - 2¹⁰ = 99008977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99010061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1596905 + ... + 1596966.

It is an arithmetic number, because the mean of its divisors is an integer number (25550976).

Almost surely, 2^99010001 is an apocalyptic number.

It is an amenable number.

99010001 is a deficient number, since it is larger than the sum of its proper divisors (3193903).

99010001 is a wasteful number, since it uses less digits than its factorization.

99010001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3193902.

The product of its (nonzero) digits is 81, while the sum is 20.

The square root of 99010001 is about 9950.3769275340. The cubic root of 99010001 is about 462.6220779278.

The spelling of 99010001 in words is "ninety-nine million, ten thousand, one".